@media only screen and (device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3) {
  html,
  .yj-content {
    height: 100%;
    box-sizing: border-box;
  }
  html:after,
  .yj-content:after {
    content: '';
    z-index: 100;
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background: #fff;
  }
}
